KR200213675Y1 - Air supply pipe and exhaust pipe connet structure for a burner - Google Patents

Abstract

The present invention relates to a supply and exhaust pipe connection structure for the combustor. The present invention provides a supply / exhaust pipe composed of a double pipe by a supply pipe and an exhaust pipe, first and second connection members interconnecting the supply / exhaust pipe, communication connected to the exhaust pipe and a combustor, and connected to the supply pipe to the inside of the combustor. In the supply / exhaust pipe connection structure consisting of an air supply pipe for supplying external air to the furnace, the first connection member is integrally formed with a fitting piece having a fitting groove extending on an outer circumference thereof and fixedly fixed to the outer circumferential surface of the one side of the air supply pipe, The air supply pipe is hung on the outer periphery of one side is inserted into the inlet hole of the air supply pipe, bent one end of the air supply pipe to be fixed to the inner circumferential surface of the inlet hole, the air supply pipe is formed with a projection formed on the other side of the guide The cap is inserted, and the guide cap is fixed by bending the outer circumference of the other end of the air supply pipe inward.

The present invention constructed as described above is separated from the conventional welding work for connecting the supply and exhaust pipes for the combustor, and is assembled in a mutually fitting manner, thereby improving the appearance and improving the quality of the product, and also providing the effect of promoting safety. do.

Description

Supply structure for combustor {AIR SUPPLY PIPE AND EXHAUST PIPE CONNET STRUCTURE FOR A BURNER}

The present invention relates to a connection structure of an exhaust pipe for discharging exhaust gas generated in a combustor such as a boiler or a hot air fan to an outside and an air supply pipe for introducing external air into the combustor, and in particular, a first connection for fixing the supply / exhaust pipe to each other. The fitting groove is formed in the outer periphery of the member to form a close fitting fixed to the outer peripheral surface of the air supply pipe on one side, and the engaging portion is formed in the air supply pipe for supplying external air into the combustor, inserted into the inlet hole of the air supply pipe and the end thereof Was bent outward to fix the air supply pipe, and the other end of the air supply pipe was bent inward to fix the guide cap inserted in the inner diameter, which is a spot welding operation used to connect the supply and exhaust pipe as in the prior art. As it is peeled off and assembled by fitting method, it improves appearance and improves product quality. It relates to a pipe connection structure.

In general, a combustor air supply / exhaust pipe such as a boiler or a hot air fan has a double structure in which an exhaust pipe connected to an exhaust part of a combustor is located inside, and an air supply pipe for supplying air into the combustor is located outside the exhaust pipe.

Such a combustor supply / exhaust pipe will be described with reference to the accompanying drawings.

1 is a cross-sectional view of a state where a conventional combustor supply / exhaust pipe is installed, and FIGS. 2A, 2B, and 2C are enlarged cross-sectional views of main parts of parts A, B, and C of FIG.

As shown in Fig. 1 and 2, the supply and exhaust pipe 100 is made of a small diameter, the exhaust pipe 200 is installed inside and the double pipe by the supply pipe 300 is made of a large diameter installed outside Is done.

The exhaust pipe 200 is welded and fixed to one side of the first and second connection members 230 and 231 on one side and the other outer diameter, and the communication 500 of the combustor 400 is inserted and connected to one side inner diameter.

The communication 500 is provided with a corrugation portion in the middle region to be bent freely, one side thereof is connected to the combustor 400, the other outer diameter is inserted and connected to one side inner diameter of the exhaust pipe (200).

The air supply pipe 300 is welded and fixed to the other side of the first and second connection members 230 and 231, one side of which is welded to one side and the other outer diameter of the exhaust pipe 200 to maintain a gap. That is, the thickness of the first and second connection members 230 and 231 is fixed by maintaining a distance from the exhaust pipe 200.

In addition, a plurality of air supply holes 301 are formed in the other region of the air supply pipe 300 through which external air flows into the inside.

In addition, an inlet hole 302 is formed at one outer periphery of the air supply pipe 300, and an air supply pipe 310 is welded to the inlet hole 302 to be connected to a supply pipe 410 installed in the combustor 400, thereby providing external air. Is fed into the combustor 400.

On the other hand, the other area of the air supply pipe 300 is exposed to the outside of the wall 700, it is easy to enter the outside air and discharge the exhaust gas.

And, the other side of the air supply pipe 300 is formed with a protrusion protrusion 304, the inner diameter of the guide cap 600 is inserted and welded, the exhaust gas is quickly discharged to the outside through the exhaust pipe 200 and at the same time inflow of external air Is blocked.

Referring to the conventional operating state configured as described above, as shown in Figs. 1 to 2, the exhaust gas generated from the combustor 400 such as a boiler and a hot air fan is connected to one side of the combustor 400, and the other side of the exhaust pipe 200 has an outer diameter. It is introduced into the exhaust pipe 200 through the communication 500 inserted into one inner diameter.

In addition, the exhaust gas introduced into the exhaust pipe 200 is quickly inserted into the locking protrusion 304 of the outer diameter of the air supply pipe 300 exposed to the outside of the wall 700 to be quickly welded to the outside through the welded guide cap 600. At the same time the outside air is blocked.

On the other hand, the outside air is introduced into the air supply pipe 300 through the air supply hole 301 of the air supply pipe 300 through the air supply pipe 310 inserted into the inlet hole 302 of the air supply pipe 300 and It is supplied into the combustor 400 through a supply pipe 410 connected to the air supply pipe 310.

Then, the first and second connection members 230 and 231 welded between the exhaust pipe 200 and the air supply pipe 300 and the outer and inner diameters of one side and the other side of the exhaust pipe 200 are respectively fixed in a state of being maintained.

However, the conventional air supply / exhaust pipe connection structure for the combustor configured as described above has an air supply pipe such that the first and second connection members connecting the air supply / exhaust pipe are welded and fixed, and communicate with the inlet hole of the air supply pipe as shown in FIGS. 2A, 2B, and 2C. This welding is fixed and the guide cap is welded and fixed to the outer diameter of the air supply pipe, that is, the connection structure of the combustor supply / exhaust pipe is proceeded to spot welding, and each welded part is exposed to the outside, and the quality is deteriorated. Due to the nature, when the impact is applied to the spot welding site, there are various problems such as the welding site falls.

The present invention is devised to solve such a conventional problem, the present invention is to improve the appearance by assembling by connecting the supply and exhaust pipe in the fitting method, the purpose of which is to improve the quality of the product.

The present invention for achieving the above object is the air supply and exhaust pipe consisting of a double pipe by the air supply pipe and the exhaust pipe, the first and second connection members interconnecting the supply and exhaust pipe, the communication connected to the exhaust pipe and the combustor, In the supply / exhaust pipe connection structure consisting of an air supply pipe connected to an air supply pipe and supplying external air into the combustor, the first connection member is integrally formed with a fitting piece formed by an extension groove on the outer periphery of the first air supply pipe. Closely fixed to the outer circumferential surface, the air supply pipe is inserted into the inlet hole of the air supply pipe is protruded in one outer peripheral edge, bent one end of the air supply pipe to be fixed to the inner peripheral surface of the inlet hole, the air supply pipe is the other side A protrusion is formed in the region to insert the guide cap, and the guide cap is bent inward by bending the outer periphery of the other end of the air supply pipe. It characterized by that process.

1 is a cross-sectional view of a state in which a supply and exhaust pipe for a conventional combustor is installed.

2A, 2B, and 2C are enlarged cross-sectional views of portions A, B, and C of FIG. 1;

3 is a cross-sectional view of a state in which a combustor supply / exhaust pipe connection structure according to the present invention is installed.

4 is an enlarged cross-sectional view of the portion A of FIG.

5 is an enlarged cross-sectional view of a portion B of FIG.

6 is an enlarged cross-sectional view of the portion C of FIG.

<Explanation of symbols for main parts of the drawings>

20: exhaust pipe 23: first connecting member

23a: fitting groove 23b: fitting

30: supply pipe 32: inlet hole

33: air supply pipe 34: locking portion

35: projection 60: guide cap

Hereinafter, with reference to the accompanying drawings an embodiment according to the present invention will be described in detail.

Figure 3 is a cross-sectional view of the combustor supply and exhaust pipe connection structure is installed according to the present invention, Figure 4 is an enlarged cross-sectional view of the portion A of Figure 3, Figure 5 is an enlarged cross-sectional view of the portion B of Figure 3, 6 is an enlarged cross-sectional view of the portion C of FIG.

As shown in Figures 3 to 6, the supply and exhaust pipe 10 of the present invention is made by a small diameter and the exhaust pipe 20 is installed inside and made of a large diameter by the air supply pipe 30 is installed outside It consists of a double tube.

The exhaust pipe 20 has one side of the first and second connection members 23 and 24 fixed to one side and the other outer diameter thereof, and the communication 50 of the combustor 40 is inserted into and connected to one inner diameter thereof.

The communication 50 is provided with a corrugation portion in the middle region to be bent freely, one side thereof is connected to the combustor 40, the other outer diameter is inserted and connected to one side inner diameter of the exhaust pipe (20).

The air supply pipe 30 is fixed to one side of the exhaust pipe 20 and the other side of the first and second connection members 23 and 24 having one side fixed to the outer diameter thereof, thereby maintaining a gap. That is, the thickness of the first and second connection members 23 and 24 is fixed by maintaining a distance from the exhaust pipe 20.

At this time, the outer periphery of the first connecting member 23 is integrally formed with the fitting piece 23b having the fitting groove 23a extended to be tightly fixed to the outer peripheral surface of the one side air supply pipe 30.

In addition, a plurality of air supply holes 31 into which outside air flows into the other area of the air supply pipe 30 is formed.

In addition, an inlet hole 32 is formed at an outer circumference of one side of the air supply pipe 30, and an air supply pipe 33 is inserted and connected to the inlet hole 32, and the air supply pipe 33 is a supply pipe 41 of the combustor 40. External air is supplied into the combustor 40.

At this time, one end of the air supply pipe 33, the outer periphery of the catching portion 34 is protruding, one end of the catching portion 34, that is, the air supply pipe 30 is bent outward to the inner peripheral surface of the inlet hole 32 By being in close contact with each other, the air supply pipe 33 is fixed to the inlet 32 of the air supply pipe 30.

On the other hand, the other area of the air supply pipe 30 is exposed to the outside of the wall surface 70 to facilitate the inflow of external air and the discharge of exhaust gas.

In addition, the outer diameter of the guide cap 60 is inserted into the other inner diameter of the air supply pipe 30 so that the exhaust gas is quickly discharged to the outside through the exhaust pipe 20 and the inflow of external air is blocked.

At this time, a plurality of protrusions 35 are formed to protrude to the inner circumference of the other side of the air supply pipe 30 to insert the guide cap 60 to support the insertion of the guide cap 60, and the other end of the air supply pipe 30. By bending the outer periphery of the inner side to fix the guide cap (60).

Referring to the assembled state of the present invention configured as described above, the exhaust pipe 20 and the air supply pipe 30 as shown in Figure 3 is fixed by maintaining the interval as the first and second connecting members (23, 24). That is, by inserting the exhaust pipe 20 in the internal diameter of the air supply pipe 30, the first and second connecting members 23 and 24 are fixed in a state where the interval is maintained.

At this time, the fitting groove 23a of the fitting piece 23b extending integrally with the outer circumference of the first connecting member 23 is tightly inserted into the outer circumferential surface of the one side air supply pipe 30 to fix the first connecting member 23. (See Figure 4)

Then, when one end of the air supply pipe 33 is inserted into the inner diameter of the inlet hole 32 of the air supply pipe 30, the outer diameter of one end of the air supply pipe 33 is inserted into the inner diameter of the inlet hole 32 and the air supply pipe 33 The one end 34 of the outer diameter is in close contact with the outer peripheral surface of the inlet hole (32).

In such a state, one end of the air supply pipe 31 inserted into the inlet hole 32 is bent to the outside so as to be in close contact with the inner circumferential surface of the inlet hole 32 so that the air supply pipe 31 is the inlet hole 32 of the air supply pipe 30. ) Is fixed. (See Fig. 5)

Subsequently, when the guide cap 60 is inserted into the other inner diameter of the air supply pipe 30, the guide cap 60 is caught by the protrusion 34 formed to protrude to the inner circumference in the other area of the air supply pipe 30. It will not be inserted. At this time, the outer periphery of the other end of the air supply pipe 30 is bent inward to fix the guide cap 60 (see FIG. 6).

In this state, the outer diameter of the other side of the communication unit 50 connected to one side of the combustor 40 is inserted into the inner diameter of the exhaust pipe 20, and the other side of the air supply pipe 31 is connected to the combustor 40. Then, the assembly of the supply / exhaust pipe 10 is completed.

Looking at the operation state of the present invention is completed assembly as described above, the exhaust gas generated from the combustor 40, such as boiler and hot air fan is connected to one side to the combustor 40, the other outer diameter is inserted into one side inner diameter of the exhaust pipe (20). It is introduced into the exhaust pipe 20 through the established communication (50).

In addition, the exhaust gas introduced into the exhaust pipe 20 is quickly discharged to the outside through the guide cap 60 inserted into and fixed to the inner diameter of the air supply pipe 30 exposed to the outside of the wall 70 and at the same time, the inflow of external air. Is blocked.

On the other hand, the external air is introduced into the air supply pipe 30 through the air supply hole 31 of the air supply pipe 30 and is inserted into and fixed to the inlet hole 32 of the air supply pipe 30. It is supplied into the combustor 40 through the supply pipe 41 inserted into the air supply pipe 33.

In order to secure the supply and exhaust pipes, the present invention described above forms a fitting piece with an insertion groove formed on the outer circumference of the first connection member to closely fix the outer circumferential surface of the supply pipe on one side, and to supply external air into the combustor. The air supply pipe was formed to engage the inlet hole of the air supply pipe and bent its end to the outside to fix the air supply pipe. The other end of the air supply pipe was bent inward to fix the guide cap inserted into the inner diameter. This is to be assembled in the interfitting method without spot welding work in order to connect the supply and exhaust pipe as in the prior art to improve the appearance and improve the quality of the product, and also provides the effect of promoting safety.

Claims (1)

A supply / exhaust pipe composed of double pipes by a supply pipe and an exhaust pipe, first and second connection members interconnecting the supply / exhaust pipe, communication connected to the exhaust pipe and a combustor, and external air into the combustor connected to the supply pipe In the supply and exhaust pipe connection structure consisting of an air supply pipe is supplied, The first connection member 23 is integrally formed with the fitting piece 23b having the fitting groove 23a extended on the outer circumference thereof and fixedly fixed to the outer circumferential surface of the air supply pipe 30 on one side. The air supply pipe 33 is inserted into the inlet hole 32 of the air supply pipe 30 by the locking portion 34 protrudes on one side outer circumference, and one end of the air supply pipe 33 is bent outward to the inlet hole. (32) fixed to the inner circumferential surface, The air supply pipe 30 is a projection 35 is formed in the other region to insert the guide cap 60, the other end of the air supply pipe 30 is bent inward to fix the guide cap 60 A supply / exhaust pipe connection structure for a combustor.